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Nafamostat Efficacy and Safety in Critically Ill Patients(NICE)

18. februar 2013 opdateret af: Seoul National University Hospital

Circuit Survival and Efficacy for Middle Molecular-weight Solute Elimination Between Nafamostat Infusion and Heparinized Saline Priming

Acute kidney injury (AKI) is a common and serious problem in critically ill patients, and is known to be an independent risk factor for mortality. Renal replacement therapy (RRT) is the mainstay of supportive treatment of patients with severe acute kidney injury. The goal of RRT is to achieve adequate correction of uremia, electrolyte abnormalities, and volume overload while ensuring good hemodynamic tolerance. The advantages of continuous renal replacement therapy (CRRT) are increased time-averaged dialysis dose, less hemodynamic instability, and possibly, removal of high molecular weight solutes, such as inflammatory cytokines. Solute removal can occur by several different mechanisms in CRRT. For relatively small solutes, the importance of diffusion and convection is emphasized, for solutes of larger molecular weight, the importance of convection and adsorption is emphasized. The ability of a specific CRRT to remove a certain solute is determined by membrane characteristics. But actual measurements of middle molecule clearance in large clinical trials have not been available in most trials.

During CRRT, blood is conducted through an extracorporeal circuit, circuit clotting is a major problem in daily practice of CRRT, increasing blood loss, workload, and costs. Early clotting is related to bioincompatibility, critical illness, vascular access, CRRT circuit, and modality. Therefore, one major intervention to influence circuit survival is anticoagulation. However, systemic anticoagulation, usually with heparin, can produce hemorrhagic complications in patients at high risk of bleeding. To minimize the risk of bleeding, a number of alternative regimens has been proposed, however, each of those methods has its own limitations and complication. Nafamostat mesilate, a serine proteinase inhibitor, while inhibiting various clotting factors in filter circuit, is characterized by short half life resulting in little systemic anticoagulation effect. A recently developed CRRT AN69ST membrane® (Gambro Inc) is coated with a polyethylene imine (PEI, cationic biopolymer) on the membrane surface. Once adsorbed onto the membrane, heparin keeps its anticoagulant properties. Therefore CRRT has been managed without systemic administration of heparin.

The investigators will conduct a multicenter prospective randomized controlled open-label trial which compares the difference in circuit survival between between nafamostat infusion and heparinized saline priming as anticoagulation for CRRT. The primary end-point of this study is circuit survival, the time of 1st membrane exchange. The secondary end-point is clearance of small molecule (urea) and middle molecule (β2 microglobulin) at 0, 1, 6, 24h, ACT(activated coagulation time) measurements after 1hr of the CRRT, Hemorrhagic complication. This is a noninferiority trial. The aim is to demonstrate that nafamostat infusion is not inferior to the heparinized saline priming. For this purpose, at least 80 subjects (a total of 160) would be required for each group if type I error rate is 5% and type II error is 20% given 20% of drop-out rate during the study period. Block randomization will be used by means of a dedicated website.

There are still conflicting data on the effective exchange time of circuit membrane. Our study may help to improve prognosis in patients with severe AKI.

Studieoversigt

Status

Ukendt

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

160

Fase

  • Fase 3

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Korea, Republikken
      • Koyang, Korea, Republikken
        • Rekruttering
        • National Health Insurance Corporation Ilsan Hospital
        • Kontakt:
      • Seongnam, Korea, Republikken
        • Rekruttering
        • Seoul National University Bundang Hospital
        • Kontakt:
      • Seoul, Korea, Republikken
        • Rekruttering
        • Seoul National University Hospital
        • Kontakt:
      • Seoul, Korea, Republikken
        • Rekruttering
        • Seoul National University Boramae Medical Center
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

20 år til 85 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. Injury stage of RIFLE criteria or more: > 2-fold increase in the serum creatinine or urine output < 0.5 mL/kg/hr for 12 hours
  2. Patients with any dialysis treatment before admission to the ICU or patients with end-stage renal failure and receiving dialysis
  3. Informed consent has been obtained.

Exclusion Criteria:

  1. patient age < 20 years or > 85 years
  2. life expectancy less than 3 months (ex. terminal stage of malignancy)
  3. Child-Pugh class C liver cirrhosis
  4. pregnancy or lactation
  5. history of anticoagulation prior to the randomization
  6. bleeding tendency (platelet count < 50,000/ul, INR > 2.5, PTT > 65, or fibrinogen < 1.00 g/L)
  7. history of hemorrhagic disease (ex. GI bleeding, cerebral hemorrhage, pulmonary hemorrhage)

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: heparinized saline priming group
Experimental group : heparinized saline priming group
Medicin: heparinized saline priming group
Aktiv komparator: nafamostat infusion group after heparinized saline priming
active comparator : nafamostat infusion group after heparinized saline priming
Medicin: nafamostat infusion after heparinized saline priming

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
the time of 1st membrane exchange
Tidsramme: the time of 'filter is clotted'
the time of 'filter is clotted'
the time of 'filter is clotted'

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Clearance of small molecule (urea)
Tidsramme: 0, 1, 6, 24h
Clearance of small molecule (urea)
0, 1, 6, 24h
Clearance of middle molecule (β-2 microglobulin)
Tidsramme: 0, 1, 6, 24h
Clearance of middle molecule (β-2 microglobulin)
0, 1, 6, 24h
ACT(activated coagulation time) measurements after 1hr of the CRRT
Tidsramme: after 1hr of the CRRT
ACT(activated coagulation time) measurements after 1hr of the CRRT
after 1hr of the CRRT
Hemorrhagic complication
Tidsramme: during CRRT
Hemorrhagic complication
during CRRT

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Seoul National University Hospital

Samarbejdspartnere

SK Chemicals Co., Ltd.

Efterforskere

  • Studiestol: Dong Ki Kim, MD, PhD, Seoul National University Hospital

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. marts 2012

Primær færdiggørelse (Forventet)

1. august 2013

Studieafslutning (Forventet)

1. august 2013

Datoer for studieregistrering

Først indsendt

2. december 2011

Først indsendt, der opfyldte QC-kriterier

5. december 2011

Først opslået (Skøn)

6. december 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

20. februar 2013

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

18. februar 2013

Sidst verificeret

1. februar 2013

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • Nafamostat01

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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